From patchwork Fri Mar  2 20:32:17 2018
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Subject: py3: silence "bad escape" warning emitted by re.sub()
From: Yuya Nishihara <yuya@tcha.org>
X-Patchwork-Id: 28724
Message-Id: <b9a4498025f901cce6a5.1520022737@mimosa>
To: mercurial-devel@mercurial-scm.org
Date: Fri, 02 Mar 2018 15:32:17 -0500

# HG changeset patch
# User Yuya Nishihara <yuya@tcha.org>
# Date 1519946556 18000
#      Thu Mar 01 18:22:36 2018 -0500
# Node ID b9a4498025f901cce6a5ceaedf027173e11d6a59
# Parent  dfcf589a4031211a67bab022e0a1b414f364bc39
py3: silence "bad escape" warning emitted by re.sub()

Since we pass user strings directly to re.sub(), we can't avoid this warning
without a BC.

diff --git a/mercurial/util.py b/mercurial/util.py
--- a/mercurial/util.py
+++ b/mercurial/util.py
@@ -246,6 +246,10 @@ if _dowarn:
     warnings.filterwarnings(r'default', r'', DeprecationWarning, r'mercurial')
     warnings.filterwarnings(r'default', r'', DeprecationWarning, r'hgext')
     warnings.filterwarnings(r'default', r'', DeprecationWarning, r'hgext3rd')
+if _dowarn and pycompat.ispy3:
+    # silence warning emitted by passing user string to re.sub()
+    warnings.filterwarnings(r'ignore', r'bad escape', DeprecationWarning,
+                            r'mercurial')
 
 def nouideprecwarn(msg, version, stacklevel=1):
     """Issue an python native deprecation warning